Oil-burner system for furnaces



A. FISHER.

OIL BURNER SYSTEM FOR FURNACES Patented July 26, 1921.

3 SHEETSSHEET 1.

APPLICATION FILED EEB. 20, 1920.

Ji mull A. FISHER.

OIL BURNER SYSTEM FOR FURNACES.

APPLICATION FILED FEB. 20. 1920.

1,385,534. Patented July 26, 1921..

3 SHEETS-SHEET 2.

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A. FISHER.

OIL BURNER SYSTEM FOR FURNACES.

APPLICATION FILED FEB. 20. 1920.

Patented July 26, 1921.

3 SHEETS-SHEET 3.

IA 1(III(I!I(II(IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII)!IM 1UNHTED STATES PATENT OFFICE- ALFRED FISHER, OF CHICAGO, ILLINOIS.

OIL-BURNER sYs'rEM FOR runnaons.

Specification of Letters Patent.

Patented July 26', 1921.

Application filed February 20, 1920. Serial No. 360,218.

To all whom it me concern."

to the numerals of reference marked there- 7 on, which form a part ofthis specification.

This invention relates to an improved type.

of an oil burner system wherein oil burners are adapted to directheating flames into a furnace firebox provided with a plurality ofbaflie plates so distributed and arranged that the flames are evenlydivided to insure an even distribution of heat in all parts of thefirebox.

It isan object of this invention to provide an improved oil burnerheating unit for furnaces.

It. is also an object of the invention to provide a furnace with an oilburner system adapted to direct flames against a series of bafile plateswithin the furnace firebox to insure a complete consumption of the oilblown into the firebox.

A further object of this invention is to provide a furnace firebox 'witha series of curved baflle lates which are so distributed that they willcause an even distribution of oil burner flames directed into thefirebox.

It is an important object of this invention to provide an improvedsystem for supplying oil and air to blast burners which are adapted todirect flames against firebox baffle plates to insure an even heating ofthe furnace.

Other and further important objects of this invention will be apparentfrom the disclosures in the drawings and specification.

The invention (in a preferred form) is illustrated in the drawings andhereinafter more fully described.

On the drawings:

Figure 1 is an elevational view of a furnace oil burner system embodyingthe principles of this invention, showing a fragmentary portion of thefurnace.

Fig. 2 is a fragmentary front-view of the furnace showing the burnerpipe connections.

Fig. 3 is a sectional view taken on line 3-6, of Fig. 2.

F1g. 4 is asectional view taken on line 4-4 of Fig. 3.

Fig. 5 is an enlarged side elevation of one of the oil blast burners.

Fig. 6 is a vertical longitudinal section thereof.

Fig. 7 is a section taken on line 7-7, of

d Fi.5.

shown on the drawings: The reference numeral 1, indicates a furnace, thefront wall of which is provided w1th firebox openings which are closedby means of door plates 2, rigidly secured in position The furnace isprovided with a firebox 1n the lower front portion thereof.

The firebox embraces a fire-brick floor 3, supported on grate bars 4.Secured across the rear end of the fire-brick floor 3, are straightvertical rear wall plates 5, made of firebrick. Mounted on the fireboxfloor 3, between each of the door plates 2, and the wall plate 5,disposed to the rear thereof, are two rows of curved fire-brick baflieplates 6. Each baflle plate 6, is curved or arc-shaped and has the'frontupper corner thereof cut away as at 7 to afford a deflecting edge. Thebaflie plates 6, of each row are alined and. spaced apart. The baflieplates 6, of one row are mounted to diverge from those of an adjacentrow to afford a passa e longitudinally between each two rows of saidspaced baflie plates. As clearly shown in Fig. 4, the rows of bafiieplates are so arranged that flames directed into the firebox passagesare broken up by the diverging rows of baflie lates which serve toevenly. distribute the ames in the furnace firebox.

Projecting into an opening in each of the furnace door plates 2, is ablast burner adapted to direct oil-gas heating flames into the fireboxfor distribution by the rows of baflie plates 6. Each blast burnerembraces a conical casing or twyer 8, having a. restricted nozzle 9,which projects into an opening in a furnace .door plate. Disposedlongitudinally within the twyer 8, is a hydrocarbon pipe 10, the innerend of which extends approximately to the restricted nozzle 9. The outerend of the pipe 10, is connected in a lug 11, and communicates by meansof a va ve 12, withan oil or other hydrocarbon supply or feed pipe 13.

Secured beneath and opening into the tw er 8, is a tubularair-regulating plug va ve 14, of conical shape and provided with a sideport or opening 15, for communication with the interior of the twyer asshown in Fi 7. An air blast pipe 16 is connected wit one end of thehousm 17, of the plug valve 14. The other end 0 the air pi e 16, isconnected with an air pump or b ower 18, adapted to produce the desiredblastpress'ure within the furnace. An air valve 33, is provided in thepipe 16 near the air pum 18. Connected with the plug valve housing 17,is an air-relief pipe 19, the out let to which is controlled by the plugvalve 14. The other end of the air-relief pipe 19, is open to the atmhere. ment of said plug va ve is such that when it is adjusted to admitthe blast to the tw er 8, the relief pipe 19, is closed thereby.

en the lug valve 14, is rotated to exclude the b ast from the twyer orpart1 exclude the same, the blast or a portion thereof, is deliveredthrou h the relief pipe 19. This arrangement ena les the force of theblast to be regulated to suit thev requirementsof use. A lever 20, isrovided for engagingfa siuared head or t1p 21, which is mtegrally ormedon the closed end of the plug valve 14, and projects through an openingin an end plate 22, of said plug valve housing 17.

One or more burners may be used. As shown two burners'are em loyed onefor each of the furnace door p ates 2, to send the blast in the samedirection into the furnace firebox. In this construction both of theburners are connected with the air pipe 16 and the oil or hydrocarbonpipe 13, to permit uniformity of action to be secured withoutdlfliculty. The air-relief pipes 19, may be connected to a common pipeto perm1t the blast to be discharged at any convenient distance from thefurnace when the i plug valve openings 15, communicate with tical pinected the relief pi 19.

The oil pipe 13, is connected with a ver- 23, the lower end of which isconmeans of pipes 24, to two pumps 25. Each pump 25, 1S 1ndependentlydriven by a motor 26. Each pipe 24, is provided with a control valve 27As shown in Fig. 1, both pumps 25, are connected by means of pipes 28,to a common feed pipe 29, which. is connected to an oil or hydrocarbontank 30. Each pipe 28, is provided with a con trol valve 31. The supplypipe 32, is attached to the tank 30, to supply kerosene oil or any othersuitable hydrocarbon fuel to sald tank. Mounted on the upper end of thepipe 23, 1s a cross or four-way connector 34. Connected with the upperarm of said connector 34, is the lower end of an auxiliary oil orhydrocarbon tank 35. A pressure gage 36, s mounted upon the auxiliarytank 35, The

The arrange-.

side arms of the connector 34, are connected with pipes 37, each ofwhich has a control valve 38, connected therein. The pipes 37, bothconnect up with one end of an overflow pipe 39, the other end of whichis connected with the top of the main tank 30. Con nected between theoil pump platform 40, and the main overflow pipe 39, is an auxiliaryoverflow pipe 41, provided with a valve 42.

The operation is as follows:

With the oil and air supply system connected up with the blast burnersmounted on the furnace 1, said furnace is adapted to be rapidly andevenl heated by flame blasts from the burners. '0 start the system oneof the pipe valves 31, and the corresponding valve 27, are opened. Therespective pump 25, connected with said valves, is now operated by itsmotor 26, thereby causing oil from the main tank 30, to be pumpedthrough the pipes 23 and- 13, into and through the two blast burner oilpipes 10. By starting the air pump 18, and opening the air pump valve33, air is blown through the air pipe 16, into both of the twyers 8,when the plug valves 14, are turned into the position shown in Fig. 7.The blasts of air and oil mix in the burner nozzles 9, and are blowninto the furnace firebox and ignited.

The blast flames thus entering the furnace firebox pass rearwardlythrough the passages between the double rows of the baflie plates 6. Thepeculiar shape and arrangement of the baflle plates 6, cause the blastflames to hit against the curved vbaille plate edges 7, and then followthe curved shape of said baffle plates. The blast flames are thus brokenup or distributed evenly within the furnace firebox resulting in an evenheating of the furnace. The intensity of the blast flames may becontrolled by adjusting the plu valves 14 and the oil valves 12. When te plug valves 14, are rotated to exclude the air from the twyers8, theair blast is delivered through the air-relief pipes 19. The force of theblast may thus be regulated to suitthe requirements of use.

Oil under pressure from the pump 25, also enters the auxiliary oil tank35, and flows into the pressure gage 36, which indicates the pressure ofthe oil being supplied to the blast burners. When the oil pressurebecomes too great the respective valve 38, is opened to permit part ofthe oil from the pump to return to the main tank 30, through oil tank30, by way of the auxiliary overflow or return pipe 41, when the valve42, is

open.

I am aware that numerous details of construction may be varied through awide range without departing from the principles of this invention, andI therefore do not purpose limiting the patent granted otherto directflames rearwardly into said firebox, straight baflle plates across therear end of the firebox floor, and a plurality of parallel rows ofnotched outwardly curved upright baflle plates disposed in the fireboxto provide a series of branching side passages leading from mainpassages whereby the flames from said blast burners are evenly deflectedto all parts of the furnace firebox.

3. The combination with a furnace and the firebox thereof, of doorplates rigidly secured in place to close the firebox door openings,blast burners mounted to project through the door plates, an air pipeconnected with said blast burners, an air pump connected with said airpipe to blow air therethrough and into said burners, an ,oil

pipe also connected with said burners, an oil pump connected with saidoil pipe, 2. main oil tank, piping connecting the same with said oilpump, an auxiliary oil tank also connected with said oil pipe, apressure gage on said auxiliary oil tank, and an overflow pipe connectedwith said auxiliary oil tank and with said main oil tank.

4. The combination with a furnace, of blast burners mounted thereon todirect flames thereinto, an air pump, an air pipe connecting said airpump with said blast burners, an air valve in said air pipe to controlthe flow of air from said air pump, a main oil tank, a main oil pump andan emergency oil pump, motors for independently driving said oil pumps,pipes connecting said oil pumps with said main oil tank, valves in saidpipes, outlet pipes leading from said oil pumps, valves therein, aconnecting pipe connected with said oil outlet pipes, an auxiliary oiltank connected with said connecting pipe, a pressure gage mounted onsaid auxiliary oil tank, an oil overflow piping connecting saidauxiliary oil tank with said main oil tank, valves in said overflowpiping, and a burner oil supply pipe connected with said connecting pipeand with said blast burners.

In testimony whereof I have hereunto subscribed my name in the presenceof two subscribing witnesses.

